Otani Kazuo
type: MusicGroup
popularity: 2
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7dd9999c39e1aa2282af48bfdd3def82ae4e98f1d075e58327521a347b05e6d6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bece0d9a-fa96-4213-9b67-104a84e38082.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bece0d9a-fa96-4213-9b67-104a84e38082.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bece0d9a-fa96-4213-9b67-104a84e38082
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7dd9999c39e1aa2282af48bfdd3def82ae4e98f1d075e58327521a347b05e6d6","name":"Otani Kazuo","registered_at":"2026-06-20T18:33:07Z","symbol":"NIM1677725","token_address":"0xaf56467d1700dfc433d5ad2498f83ae95a19ed8a","type":"artist","uuid":"bece0d9a-fa96-4213-9b67-104a84e38082"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd9999c39e1aa2282af48bfdd3def82ae4e98f1d075e58327521a347b05e6d6. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bece0d9a-fa96-4213-9b67-104a84e38082.json and https://artists.proofprofile.net/proofs/artist/bece0d9a-fa96-4213-9b67-104a84e38082.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x7dd9999c39e1aa2282af48bfdd3def82ae4e98f1d075e58327521a347b05e6d6","name":"Otani Kazuo","registered_at":"2026-06-20T18:33:07Z","symbol":"NIM1677725","token_address":"0xaf56467d1700dfc433d5ad2498f83ae95a19ed8a","type":"artist","uuid":"bece0d9a-fa96-4213-9b67-104a84e38082"}